Reduce Audio Background Noise
Clean up steady hiss and hum, with before-and-after listening and no file upload.
Drop an audio file to clean it up
Reduce steady hiss or hum without uploading your recording.
up to 100 MiB / 20 minHow to reduce recording noise
Start gently and listen for changes to the voice.
- 01
Choose one audio recording up to 100 MiB and 20 minutes.
- 02
Pick light, balanced, or strong noise reduction and an output format.
- 03
Process locally, compare the two versions, and save the cleaner one.
Best for steady background sound
Clean up audio on-device
The original and cleaned files stay in your browser and are never sent to ToAudio servers.
Noise reduction questions
Up to 100 MiB and 20 minutes per file. Short recordings work best on phones.
What noise works best with this tool?
It is designed for relatively steady background sound such as hiss, fan noise, or hum. Results vary with the recording.
Can it remove other people talking?
No. Speech overlaps the sound you want to keep, and this basic filter does not separate speakers.
Why might the voice sound muffled?
A strong setting can remove parts of speech along with noise. Try the light setting and compare before downloading.
Is the audio uploaded?
No. The filter runs in your browser using FFmpeg WebAssembly.